Nok
you are going to receive within few days from Zihel Singapore the following quotations:
◾for 2ESMODZIE: Art 349045 – AM-MODBUS - € 19.40/pc
◾ for 2TVA80091 (the EC fan already equipped with modbus module) Art ZN080-ZIL.GG.V7P3 con AM-Modbus. € 543,75/pc
Unfortunately i don't know the INCOTERM of these prices (I guess CIF BKK port but please double check when you get the quotation)